elctric shock

[d1scv]

be carefull using an earth rod in conjunction with PME as a fault on the network resulting in a lost neutral near your property may result in all your bonded metalwork becoming live!!!!!!!!!!!!!


An earth spike [question] would only serve to reduce the possible effect of a lost neutral ?

One more thought, in all my years I got 2 belts, both from borrowed neutrals.
230AC. Both threw me BIG time- certainly did not grab me.

 

[Heating bloke]

I thought only DC grabbed you, and AC threw you off.

d1scv. I've had about seven or eight electric shocks. Funnily enough I've gone about 20 years without getting one, then had two in two weeks earlier this year.

 

[Des 56]

I thought only DC grabbed you, and AC threw you off.

.

I am going to be argumentative for the hell of it


I say 400 + volts AC will grab you






Care to prove me wrong with a pratical demonstration?

 

[Heating bloke]

Okay, fair enough, but why would the guy's daughter have got 400 volts?

 

[Notsosmart]

I am going to be argumentative for the hell of it

I say 400 + volts AC will grab you

Care to prove me wrong with a pratical demonstration?

Current doesn't 'grab' you Its the muscles involuntarily clenching

Practical demonstration you say?: as an apprentice 30 years ago I had the misfortune to put my palm across 2 phases of a live 415v o/l relay with open contacts: not to be recomended I was unable to move until I concentrated hard on dragging my arm away whilst roaring a shout.
The spark working on the panel (who hadn't warned me it was still live) just looked up & said "By the way be careful whilst you are labelling the contactors"!!

 

[d1scv]

I now think we are all wrong!
Done a bit of research. Put simply, it would seem that all electic shock cause you to grab- AC & DC.

I think the apparent contradictory results- stuck or thrown- are dependent on other factors.

Our victim above, that received 415 straight across his hand, grabbed and got stuck.

In my case, 230 through my fingers and thence down the body, I guess my hand grabbed causing my fingers to clear the live wire, my legs also grabbed. Throwing me across the room.


My theory based on Physiological effects of electricity : ELECTRICAL SAFETY

 

[Deleted member 9648]

Sorry but I dont see how an electric shock can "throw you across the room"....I've had a few minor belts in my time but I've not been "Thrown across the room".....and yet everyone else who gets a handful claims they were "Thrown across the room".

 

[d1scv]

Sorry but I dont see how an electric shock can "throw you across the room"....I've had a few minor belts in my time but I've not been "Thrown across the room".....and yet everyone else who gets a handful claims they were "Thrown across the room".

Trust me- I finished up in a heap a good 12 ft away.

And it was all in ultra slow motion- I can remember whilst travelling trying to work out how on earth that had happened.

But I think your comment might help to validated my theory. In my case I was sitting on a stool and the belt caused my legs to kick. Perhaps you were standing- thus the sudden kick would not have the same effect.

I'll try and dig out the case of the shock victim that survived- but took his mate out on the way.

 

[Heating bloke]

Well, as I said, I've had seven - and one not-so-bad through a faulty neon screwdriver while standing on an aluminium ladder. Each time it just made my hand fly off in shock/surprise. About the third one I had was placing all my fingers on a busbar as I gripped it to disconnect a screw. I remember pretty much throwing the thing and swearing. The customer asked me if there was anything wrong, and I apologised. I don't intend to have any more as I really hate it! That rapid throbbing (which I suppose is the hertz) can upset your day.

 

[kung]

the real questions that I would be asking, would be to the DNO in terms of why was the Main Earth to Momin's terminated in the neighbours house,
Yooj

Could be a loop in & loop out system ! The DNO have done this on a few areas to save money, i have the same system in my house.

 

[Yooj]

Could be a loop in & loop out system ! The DNO have done this on a few areas to save money, i have the same system in my house.

Kung, do the DNO display any warning signs/labels etc when they do this? Any chance that you could take a photo or two so that we are able to see the configuration?

Yooj

 

[kung]

Kung, do the DNO display any warning signs/labels etc when they do this? Any chance that you could take a photo or two so that we are able to see the configuration?

Yooj

The only labels are the norm earth ones mate ! bit dodgy esp as the neybour is a childminder and had to ask when shes out so i can discon her cpc to do my IR test ! by the way the two cpc's were terminated on an earth block next to my CU.

 

[Yooj]

Thanks for that....It is very conceivable that the main earth could be removed, say for Ze testing, and subsequent CCU change, or re-wire for example....Even for a short duration, i.e. a matter of minutes could leave the properties who are reliant upon the looped earth vulnerable.

Yooj